Improvement in processes of uniting rubber with wood



capable of withstanding which it will be subjected.

pawn em t.

Letters Patent No. 107,729, dated September 27,1870.

IMPROVEMENT IN PRO CESSES OF UNITING RUBBER WITHWOOD.

The BcheduIe referred to in these Letters Patent and making part of the same.

To all whom it may concern v Be it known that I, Fem: B. SHEARER, of oblumbus, in the county of .Franklin and State of Ohio,

have'inveuteda, certain Process of Uniting Rubber with Wood or other hardsubstances; endI do hereby declare that the following is a full, clear, and exact description thereof.

l The nature of my inventiouconsistsin combining the pompound of what, after proper treatment, forms -vnlcanizedrubber, or'yany of the allied gums, with wood, metal, or otherhard substances, in a mold, by

means of pre ssure snfficient tofo'rm a, perfect mechemical union of the two substances employed, and,

while thus under pressure, vulcanizing the compound rubberupo n the substance towhich it has been n'nited, so as to give the finished article the appearance l of solid vulcanized rubber.

' To carry out iny process, I provide at suitable mold,

of metal which is susceptible of a, high polish, but it may be made of enameled metal, or other substance The: article to be covered is pleced into this mold having the contour itis desired to give to the article ,after it has been covered with or united to' the rubher. This mold is made; by preference, of any kind the heat and pressure to and surrounded-by the proper quantity of the compound rubber. The sections of the mold are then closed and subjected t6 3, pressure suflicient to bring their edgestogether, bringing the rubber in such close'contact withthe-sdbStance it'surrounds as to form a perfectmechanical union withtbe same.

While thus -confined under. pressure in the mold,

the rubber is subjected to the-properdegree of heat to eflect its vulcanization. V

V The finishedartielemay'then'be removed from the mold, possessing a. highly polished surface.

' What I,claim,and desire to secure byLetters ratnt, is-

Theiproc'essherein described, of mechanically uniting compound rubber with wood, metahor other hard substances, by means of pressure in a. mold, and, while thus under pressure, vulcanizing the rubber, so

as to give to the finished article the appearance of solid vulcanized rubber.

'In testimonywhereof I have signed'iny'name to this specification in the presence of two subscribing witnesses.

FRANK REHEARER.

Witnesses:

l D. P. HOLLOWAY, E. M. WRIGHT. 

